首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   56394篇
  免费   687篇
  国内免费   3篇
  57084篇
  2018年   3838篇
  2017年   3256篇
  2016年   2740篇
  2015年   635篇
  2014年   657篇
  2013年   3139篇
  2012年   1541篇
  2011年   3321篇
  2010年   3088篇
  2009年   2070篇
  2008年   2636篇
  2007年   2997篇
  2006年   948篇
  2005年   1051篇
  2004年   1009篇
  2003年   953篇
  2002年   941篇
  2001年   865篇
  2000年   852篇
  1999年   697篇
  1998年   465篇
  1997年   478篇
  1996年   432篇
  1995年   421篇
  1992年   642篇
  1991年   577篇
  1990年   583篇
  1989年   532篇
  1988年   549篇
  1987年   521篇
  1986年   550篇
  1985年   562篇
  1984年   550篇
  1983年   513篇
  1982年   423篇
  1981年   432篇
  1979年   529篇
  1978年   490篇
  1977年   429篇
  1976年   446篇
  1975年   469篇
  1974年   572篇
  1973年   559篇
  1972年   413篇
  1971年   426篇
  1970年   395篇
  1969年   422篇
  1968年   498篇
  1967年   451篇
  1966年   465篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
331.
332.
333.
334.
A study is reported in which the relations among normal aging, source amnesia, and frontal lobe functioning were explored. Twenty-four older adults (aged 60-84 years) were tested on their ability to remember where they had acquired new factual information; they were also given the Wisconsin Card Sorting Test (WCST), a test of verbal fluency, and other psychometric tests. The degree of source amnesia in this normal sample correlated with age, verbal fluency, and some measures from the WCST. Source amnesia was not related to Performance IQ, however, or to a measure of fact recall. The implications for the relations among aging, memory, and frontal lobe functions are discussed.  相似文献   
335.
Two hundred twelve bereaved elders rated marital adjustment using items drawn from the Locke and Wallace (1959) Marital Adjustment Test and completed the Beck Depression Inventory 2 months, 12 months, and 30 months after the loss of their spouses. Their responses were compared with those of 162 nonbereaved individuals of comparable age who were tested at the same times. More positive ratings of marital adjustment were made by bereaved subjects than by nonbereaved subjects. Among nonbereaved elders, more severe ratings of depression were associated with lower ratings of marital adjustment. In the bereaved sample, however, the opposite was found: More severe ratings of depression were associated with higher ratings of marital adjustment. This pattern of results changed only slightly over the 2.5-year course of bereavement and was not influenced by gender. These results are discussed in terms of cognitive processes (e.g., idealization) that influence retrospective assessments of marital adjustment during bereavement.  相似文献   
336.
Graphic designers and an experimental psychologist worked together to improve the design of two map symbols which are frequently confused: the symbols for cuttings and embankments on topographic maps. The problem was analysed in terms of the function of the symbols and their likely cognitive representations. Tests were developed to evaluate alternative designs, including an intervisibility task which requirred users to visualize the landform from the symbols viewed in the context of a map. Tests were given to schoolchildren and to experienced map users in order to compare the standard symbols with five alternative designs. Children's performance was strongly affected by the symbols they used, but experienced users were much less affected. After some refinement of the symbols a further experiment demonstrated the superiority of a number of alternative designs over the existing symbols on a range of test: scores were almost double on the intervisibility task. The paper makes recommendations to cartographers and argues for greater consideration of the inexperienced map user in the design process.  相似文献   
337.
Social uncertainty about the behavior of others with whom one is interdependent for rewards is hypothesized to encourage self-interested behavior and inhibit behavioral commitment to the group. This paper examines the roles of uncertainty, expectations, and feedback about other group members' contributions to the group in interdependent decision making. In the absence of feedback, resources tend to be divided between individual and group interests. Resource allocations to the group are found to increase significantly if group members receive feedback about other members' allocations, particularly if that feedback is at the individual level, not an aggregated group level. However, the effects of feedback presence and type are eliminated when group members state their expectations about other members' future contributions to the group. Implications for expectancy value theories of motivation and commitment to groups in organizations are discussed.  相似文献   
338.
Humility training is conceptualized as an appropriate treatment for persons who occasionally describe themselves, but are most frequently described by others as overbearing, insensitive and deceitful. Procedures are outlined to identify unrecognized fears and improve interpersonal skills. Humility is presented as a counterpoint to assertiveness and aggression/anger control interventions.  相似文献   
339.
INFANTS' PERCEPTION OF PHRASE STRUCTURE IN MUSIC   总被引:1,自引:0,他引:1  
  相似文献   
340.
Forced-choice scales were developed to measure the compatibility between worker preferences for job characteristics and actual characteristics of the job for purposes of predicting turnover and performance. The data confirmed the construct and criterion-related validity of the compatibility scores, but also indicated that the relationship between compatibility and voluntary termination was moderated by employee characteristics. Discussion centers on the implications of these findings for future job compatibility scale development and the application of this methodology to work settings where relatively homogeneous subgroups of employees differ with respect to personal and work circumstances.The authors thank the Public Opinion Laboratory of Northern Illinois University for supporting this research and Paula Howard, Robin Bebel, Alan Nordwall, and Barbara Zaitzow for their administrative assistance on this project. We also thank Gregory Sekowski and T.R. Biddle for their assistance on various aspects of the project. Finally, we thank all of the participants of the study without whom this research would not have been possible.  相似文献   
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号